Nut-lock



(No Model.)

H. T. BARLBT.

NUT LOCK No. 445,0Z9. Patented JanLZO, 1891.

w'rNEssEs JNVENTOR NlTE STATES PATENT OFFICE.

HARVVIN T. BARLET, OF LEBANON, PENNSYLVANIA.

NUT-LOCK.

SPECIFICATION formng part of Letters Patent NO. &45,029, dated January 20, 1891.

Application filed April 10, 1890. Serial No. 347302. (No model.)

To all whom it may cancer/L:

Be it known that I, HARWIN T. BARLET, a citizen of the United States, residing at Lebanon, in the eonnty of Lebanon and State of Pennsylvania, have invented a new and usefnl Improvement in Nut-Locks, of which the following is a speeifieation.

Myinvention relates to an improvement in nut-looks which by means of an adjust-able spring inserted and Operating in the end of the screw bolt and communicating with grooves in the nut looks the nut securely by expansion, or by centi-action allows it to be turned either way on or off the screw, as occasion may rcquire. This object is attained in the manner illustrated in the aeeompanying drawings, in which Figure 1 represents an elevation of a nutloek embodying my invention. Fig. 2 represents a horizont-al seetional View of the nut. Fig. 3 represents a vertical seetional view of the bolt and nut. Fig. t reprcsents a crosssection of the bolt.

Similar nnmerais of reference indicate corresponding parts in the several figures.

Referring to the drawings, the nnmeral 2 designates the nut having interier reeesses or grooves 4, said nut being fitted on the bolt 1, having an opening 5 in the end thereof. From said opening 5 apertures (3 diverge to and extend through opposite sides of the bolt, said apertures being arranged obliquely and di- Verge from the same point, as shown by Fig. 3. A spring-keyS is provided, the same having it's shank occnpying the opening 5, and provided with diverging legs 7, the head of said key being larger than the opening 5 in bolt 1, and forms means for readily manipulating the kcy. The inner walls of the apertnres ti form a V-shapcd bed or ,cak 8,011 which the diverging legs 7 of the key are adapted to ride, so that when the key is forced in the legs are spread apart and so directed into the groovo of the nut. When the key is withdrawn from looking action With the nut, the legs close, owing to their ela-sticity, and are brought within the apertures U, so as to be free from contact with the nut, the latter thus being rotatable withoutliability of its threads eutting said legs. The head 9 of the key projects from the end of the bolt, so that it is in convenientposition for handling both in locked and unlocked positions. The outer end of the opening 5 is flared,to permit easy insertion of the key 'in forcing the same toits place in the bolt. The nut? is applied to the screW-threaded portion of the bolt, and the legs 7 of the key 3 are sufficiently compressed and inserted in opening 5 of the bolt. \Vhen said legs 7 are inserted in opening 5,as aforesaid, they extend intoand through the oblique apertures G, and the ends thereof engage the apertures or grooves i in the nut E?, thereby firmly looking the nut to the bolt. By withdrawing the key the legs '7 are eontraeted and disengaged from the apertures or grooves 4 of the nut 2, and said nut may be f recly turned in either one of two directions. It will be seen that the nut may be Secured on the bolt at any point along the linos of contact oE the ends of the arms of the key with the said nut, thereby readily adapting the device to different thieknesses of material on which it may be employed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A nut-lock consisting of an internallygrooved nut 2, a bolt having a longitudinallyextending opening 5 within the body thereof, and divergiug apertures G, extending from the opening, with a peak S at the base of said opening and forming the lower walls of the apertures, a spring-key having a shank occupying said opening, and diverging legs occupying said apertures,said legs being adapted to be spread by said peak and when disengaged by the nut to be drawn into the body of the bolt, said part s being combined substantially as described.

2. In a nut-lock, a bolt having an opening 5 extending centrally therein and the apertures G, the la-tter extending through the periphery of the bolt and in communication with the said opening, thereby forming a pcak 8, 9

in eombinat-ion with the spring-key 3, with diverging legs 7 and project-ing head U, said key, with its lcgs, being adapted to be drawn outward in said opening, substantially as described.

In a nut-lock, a bolt having an opening, and divergin g apertures with a peak within the body thereof and a spring-key whose legs are adapted to ride on said peak so as to be spread and af terward close within said body, substantially as described.

IIARWIN T. BARLE'IT. iVitncsses:

H. BENTZ, .eT. G. ADAMS.

IOO 

